Humpback Channel
Dive site
Open-water channel between Zamami and Aka Islands where humpback whales concentrate January through March during their North Pacific wintering season. Divers and snorkellers enter the water when a pod surfaces nearby. Outside whale season the channel holds strong drift with grey reef sharks and eagle rays following the current.
Conditions
Depth
5 to 30 m
Open water and up
Current
Can be moderate
Can pick up on the edge
Visibility
20 to 35 m
Clearest in the calm season
Water
19 to 30°C
Tropical wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 20 | 19 | 20 | 22 | 24 | 26 | 28 | 28 | 27 | 25 | 23 | 21 |
| Vis (m) | 25 | 25 | 30 | 30 | 30 | 20 | 15 | 15 | 15 | 25 | 25 | 25 |
| Current | Moderate | Moderate | Moderate | Gentle | Gentle | Moderate | Strong | Strong | Moderate | Gentle | Gentle | Moderate |
Your chances of seeing each animal
Grey reef shark
Photo: Luis P. B. · CC BY-NC
Sometimes
About 1 in 3 dives
Spotted eagle ray
Photo: michel candel · CC BY-NC-SA
Sometimes
About 1 in 3 dives
Humpback whale
Photo: Wayne and Pam Osborn · CC BY-NC
Rare
Now and then
Field journal
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